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This study aimed to investigate early lexical and grammatical development and their relations in a sample of very immature healthy preterms, in order to assess whether their linguistic development was typical, at risk or atypical. The effects of biological factors and parental level of education on preterms' linguistic development were also investigated. Seventy-three Italian preterms and 22 Italian fullterms (control sample) were assessed at 2;6 with an Italian test of repetition of sentences (TRF). Their mothers completed the Italian version of the MacArthur questionnaire (PVB). Our results showed that most of the preterm sample displayed a typical development, compared with the fullterms, with lexicon and grammar within the normal range and a normal relation between these competencies. However, preterms characterized by an extremely low birthweight (ELBW), a very low gestational age and male gender were at risk, with slight delays in the lexicon and grammar, but still retaining the normal relation between the two.
Sansavini et al. (Wed,) studied this question.